If none of Liverpool's elite players leave the team this summer, they can maintain the pressure and do something good next season, if some of their elite players leave the team, there will be problems because Arne Slot will have to sign more players to balance his squad and the season will not wait for them; therefore, it will be better to sign new players before the beginning of the season, and you know that Manchester City, Arsenal, and some teams will compete for the title again next season.
Klopp's exit from Liverpool alone is enough to destabilize the team next season, even without any elite players leaving the club. I expect Liverpool’s performance to drop by next season, because the new coach will have to arrange his own squad, and it’s not really going to be easy to get a perfect squad for the team within a short period of time. Both Klopp and Arne Slot have different patterns of play, so the new coach will want to make use of his own pattern, which might take a little bit of time for the players to adapt to.
I will say Arne Slot needs to sign some new quality players even if no elite player is leaving the club, and he should make sure he corrects the mistakes that Klopp was making when he was in the club.